Dryland farming and livestock as sources of nitrate in ground water

APA Citation

Thamke, J. N., Nimick, D. A., Geological Survey (U.S.). (1998). Dryland farming and livestock as sources of nitrate in ground water. [Reston, Va.?]: U.S. Dept. of the Interior, U.S. Geological Survey.

MLA Citation

Thamke, Joanna N, David A Nimick, and Geological Survey (U.S.). Dryland Farming And Livestock As Sources of Nitrate In Ground Water. [Reston, Va.?]: U.S. Dept. of the Interior, U.S. Geological Survey, 1998.